In a statement by the ISICS Board (2019-09-20) LEA frequencies will no longer be used in Iowa after 2020-10-31. Included in the statement is the suggested channels to use. (This was also mentioned in a broadcast on LEA by a Post 9 dispatcher) -
https://isicsb.iowa.gov/recent-news/2019-09-20/isicsb-passes-lea-statement
https://isicsb.iowa.gov/recent-news/2019-09-20/isicsb-passes-lea-statement